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Submission + - Rest in Peace, Heinz Zemanek

Knuckles writes: Austrian computer pioneer Heinz Zemanek, the first person to build a fully transistorized computer on the European mainland, died in Vienna, aged 94 (link in German). Officially named Binär dezimaler Volltransistor-Rechenautomat (binary-decimal fully transistorized computing automaton), but known as "Mailüfterl", the computer was built in 1955 and in 1958 calculated 5073548261 to be a prime number in 66 minutes. Its power was comparable to a small tube computer of the time, and it measured 4 by 2.5 by 0.5 meters. "Mailüfterl" means "may breeze" in Viennese German and was a play on US computers of the time, like MIT's Whirlwind. 'Even if it cannot match the rapid calculation speed of American models called "Whirlwind" or "Typhoon", it will be enough for a "Wiener Mailüfterl"' (Viennese may breeze), said Zemanek. Mailüfterl contained 3,000 transistors, 5,000 diodes, 1,000 assembly platelets, 100,000 solder joints, 15,000 resistors, 5,000 capacitors and 20,000 meters switching wire. It was built as an underground project at and without financial support from the technical university of Vienna, were Zemanek was an assistant professor at the time. In 1961, Zemanek and his team moved to IBM, who built them their own lab in Vienna. In 1976, Zemanek became an IBM Fellow and stayed at IBM until his retirement in 1985. He was crucial in the creation of the formal definition of the programming language PL/I. The definition language used was VDL (Vienna Definition Language), a direct predecessor of VDM Specification Language (VDM-SL). He remained a professor in Vienna and held regular lectures until 2006.

Submission + - Apple drops some features from CUPS 1.6 not needed by OS X (

Knuckles writes: "Most Slashdot readers will be aware that in 2007, CUPS (the Common Unix Printing System) became an Apple project when Apple hired chief developer Michael Sweet and purchased the CUPS source code. In 2002, Apple had adopted CUPS as the print system for OS X, starting with 10.2. As of the upcoming CUPS 1.6, Apple seems to have decided that they have less use for the "Common" in CUPS, as noted in a blog post by Tim Waugh, the print subsystem maintainer in Fedora:

The main part that is being dropped completely is CUPS Browsing. This is currently the primary mechanism for CUPS-to-CUPS printer queue discovery on Linux. It works by having each CUPS server periodically broadcast UDP packets on port 631 announcing its available queues, and listening for broadcasts from other CUPS servers. This discovery method is being dropped because DNS-SD is preferred upstream.

CUPS on Linux can use Avahi instead, but this change means that automatic CUPS queue discovery with CUPS 1.6 will require Avahi running on both the server and the client. In addition, CUPS 1.6 will drop several file type filters. These will be moved to a new package, so it should not be a big deal."

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